       GpioChannelProvider
 
       (set-edge! [_ setting]
-                 (do-set-edge! port setting))
+        (do-set-edge! port setting))
 
       (create-edge-channel [_] (tap-and-wrap-chan mult-ch (create-channel)))
 
       Closeable
       (close! [_]
-              (a/close! write-ch)
-              (a/close! read-ch)
-              (.close poller)
-              (close! gpio-port)))))
+        (a/close! write-ch)
+        (a/close! read-ch)
+        (.close poller)
+        (close! gpio-port)))))


(defn open-channel-port
  "Opens a port which can be used for listening to value changes.  In addition to the
  options map for a basic port, the following are available:
  * :event-buffer-size - the size of the change events buffer.  Defaults to 1
  * :timeout - sets a timeout for the OS polling wait time.  Defaults to -1, which waits indefinitely
  * :edge - sets the edge value- :rising, :falling, or :both"

      gpio-port
      (catch Exception e
        (close! gpio-port)
        (throw e)))))

(defn- tap-and-wrap-chan [mult-ch out-ch]
  (a/tap mult-ch out-ch)
